主要實現微信掃碼支付，官網的SDKdemo 就不要使用 一直不能調試通過的，還是自己按照API接口文檔一步一步來實現，吐槽下微信一點責任感都木有，能不能demo搞個正常的嗎，不要坑慘了一大群碼農們有點社會責任感吧 還是多學學你的Alibaba 直接上干貨
具體文檔接口都直接參考文檔說明干
具體代碼一步一步呈上
Index.aspx 顯示二維碼頁面：
<html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <meta http-equiv="content-type" content="text/html;image/gif;charset=utf-8"/> <meta name="viewport" content="width=device-width, initial-scale=1" /> <title>微信支付樣例-掃碼支付</title> </head> <body> <div style="margin-left: 10px;color:#00CD00;font-size:30px;font-weight: bolder;">掃碼支付模式二</div><br/> <asp:Image ID="Image2" runat="server" style="width:200px;height:200px;"/> </body> </html>
protected void Page_Load(object sender, EventArgs e) { //支付金額 string PayPrice = Request.GetString("payprice").ToString("filtersql"); //支付單號 string Payorder = Request.GetString("payorder").ToString("filtersql"); //公眾號jsapi支付 H5支付傳參數 string Openid = Request.GetString("openid").ToString("filtersql"); //掃碼支付 模式二 string productId = Request.GetString("productId").ToString("filtersql"); WechatPayHelper wxpay = new WechatPayHelper(); int total_fee = (Convert.ToInt32(decimal.Parse("0.01") * 100)); //掃碼支付模式二 Native Pay trade_type=NATIVE時（即掃碼支付），此參數必傳。此參數為二維碼中包含的商品ID，商戶自行定義
主要參數依次是 訂單號 金額 openid 公眾號 產品productid string return_response = wxpay.GetUnifiedOrderResultNative("2017100882002", total_fee, "財政專費", "oC88888JeOjjkgvlWf6p999Jgu4", "456888888"); //將url生成二維碼圖片 Image2.ImageUrl = "http://localhost:1200/NotivePayAPI/MakeQRCode.aspx?data=" + HttpUtility.UrlEncode(return_response);
public class WechatPayHelper { private string RequestUrl = "";
private string key = ""; private string appid = "";//應用ID private string mch_id = "";//商戶號 private string nonce_str = "";//隨機字符串 private string sign = "";//簽名 // private string body = "";//商品描述 // private string out_trade_no = "";//商戶訂單號 private string spbill_create_ip = "";//終端IP private string notify_url = "";//通知地址 private string trade_type = "";//交易類型 private string pay_url = ""; //字符編碼格式 目前支持 utf-8 private string input_charset = "utf-8"; //簽名方式 private string sign_type = "MD5"; public WechatPayHelper() { HttpContext Context = System.Web.HttpContext.Current; DataTable dt = null; //native 掃碼支付配置 讀取配置文件XML string strXML = "Wechat_Pay_Native.xml"; ////////////////////////////////////////////////// object objValue = Common.DataCache.GetCache(strXML); if (objValue == null) { dt = GetConfigXml("//Config//PayConfig/" + strXML); Common.DataCache.SetCache(strXML, dt); } else { dt = (DataTable)objValue; } if (dt != null) { appid = dt.Rows[0]["appid"].ToString(); mch_id = dt.Rows[0]["mch_id"].ToString(); notify_url = dt.Rows[0]["notify_url"].ToString(); pay_url = dt.Rows[0]["pay_url"].ToString(); spbill_create_ip = GetUserIp(); nonce_str=StrRodamNo(16); trade_type = dt.Rows[0]["trade_type"].ToString(); key = dt.Rows[0]["key"].ToString(); } } /// <summary> /// 生成直接支付url 調用統一下單，獲得下單結果 掃碼支付模式二 支付url有效期為2小時, /// </summary> /// <param name="out_trade_no"></param> /// <param name="total_fee"></param> /// <param name="body"></param> /// <returns></returns> public string GetUnifiedOrderResultNative(string out_trade_no, int total_fee, string body, string openid, string productId) { //請求業務參數詳細 StringBuilder sb = new StringBuilder(); sb.AppendFormat("<xml><appid>{0}</appid><mch_id>{1}</mch_id> <body>{2}</body><nonce_str>{3}</nonce_str>", appid, mch_id, body, nonce_str); sb.AppendFormat("<out_trade_no>{0}</out_trade_no><total_fee>{1}</total_fee> <spbill_create_ip>{2}</spbill_create_ip><trade_type>{3}</trade_type>", out_trade_no, total_fee.ToString(), spbill_create_ip, trade_type); sb.AppendFormat("<notify_url>{0}</notify_url>", notify_url); sb.AppendFormat("<openid>{0}</openid>", openid); sb.AppendFormat("<product_id>{0}</product_id>", productId); //把請求參數打包成數組 Dictionary<string, string> softdic = new Dictionary<string, string>(); softdic.Add("appid", appid); softdic.Add("mch_id", mch_id); softdic.Add("nonce_str", nonce_str); softdic.Add("body", body); softdic.Add("out_trade_no", out_trade_no); softdic.Add("total_fee", total_fee.ToString()); softdic.Add("spbill_create_ip", spbill_create_ip); softdic.Add("trade_type", trade_type); softdic.Add("notify_url", notify_url); softdic.Add("openid", openid); softdic.Add("product_id", productId); //請求參數體 string strRequest = ""; //加密簽名 string strSign = MakeSignData(softdic, ref strRequest); strRequest += "&sign=" + strSign; //打包xml sb.AppendFormat("<sign>{0}</sign></xml>", strSign); //發送請求 string strResponse = RequestWechatpay(sb.ToString()); //URLDECODE返回的信息 Encoding code = Encoding.GetEncoding(input_charset); strResponse = HttpUtility.UrlDecode(strResponse, code); string ResponseURL = ReadXmlNode(strResponse);//獲得統一下單接口返回的二維碼鏈接code_url return ResponseURL; } /// <summary> /// 簽名原始串 /// </summary> /// <param name="dicParm">所有非空參數</param> /// <param name="strQueryString">請求串</param> /// <returns>簽名串</returns> public string MakeSignData(Dictionary<string, string> dicParm, ref string strQueryString) { //先排序 Dictionary<string, string> dicSort = dicParm.OrderBy(o => o.Key).ToDictionary(o => o.Key, p => p.Value); StringBuilder sb = new StringBuilder(); //再轉換成URL字符串 foreach (KeyValuePair<string, string> kvParm in dicSort) { if (null != kvParm.Value && "".CompareTo(kvParm.Value) != 0 && "sign".CompareTo(kvParm.Key) != 0 && "key".CompareTo(kvParm.Key) != 0 && "sign_type".CompareTo(kvParm.Key) != 0) { if (sb.Length > 0) { sb.Append("&"); strQueryString += "&"; } sb.Append(kvParm.Key + "=" + HttpUtility.UrlDecode(kvParm.Value)); strQueryString += kvParm.Key + "=" + HttpUtility.UrlEncode(kvParm.Value); } } //再和key拼裝成字符串 sb.Append("&key=" + key); //再進行MD5加密轉成大寫 return MD5Create(sb.ToString(), input_charset).ToUpper(); } public static string MD5Create(string str, string charset) { string retStr; MD5CryptoServiceProvider m5 = new MD5CryptoServiceProvider(); //創建md5對象 byte[] inputBye; byte[] outputBye; //使用GB2312編碼方式把字符串轉化為字節數組． try { inputBye = Encoding.GetEncoding(charset).GetBytes(str); } catch (Exception ex) { inputBye = Encoding.GetEncoding("GB2312").GetBytes(str); } outputBye = m5.ComputeHash(inputBye); retStr = System.BitConverter.ToString(outputBye); retStr = retStr.Replace("-", ""); return retStr; } /// <summary> ///把請求參數信息打包發送請求微信支付地址 /// </summary> /// <param name="strRequestData">請求參數字符串（QueryString）</param> /// <returns></returns> private string RequestWechatpay(string strRequestData) { Encoding code = Encoding.GetEncoding(input_charset); //把數組轉換成流中所需字節數組類型 byte[] bytesRequestData = code.GetBytes(strRequestData); //請求遠程HTTP string strResult = ""; try { //設置HttpWebRequest基本信息 HttpWebRequest myReq = (HttpWebRequest)HttpWebRequest.Create(pay_url); myReq.Method = "post"; myReq.ContentType = "text/xml"; //填充POST數據 myReq.ContentLength = bytesRequestData.Length; Stream requestStream = myReq.GetRequestStream(); requestStream.Write(bytesRequestData, 0, bytesRequestData.Length); requestStream.Close(); //發送POST數據請求服務器 HttpWebResponse HttpWResp = (HttpWebResponse)myReq.GetResponse(); Stream myStream = HttpWResp.GetResponseStream(); //獲取服務器返回信息 StreamReader reader = new StreamReader(myStream, code); StringBuilder responseData = new StringBuilder(); String line; while ((line = reader.ReadLine()) != null) { responseData.Append(line); } //釋放 myStream.Close(); strResult = responseData.ToString(); } catch (Exception exp) { strResult = "報錯：" + exp.Message; } return strResult; } /// <summary> /// 獲得客戶端的IP /// </summary> /// <returns>當前頁面客戶端的IP</returns> public static string GetUserIp() { string userHostAddress = HttpContext.Current.Request.UserHostAddress; if (string.IsNullOrEmpty(userHostAddress)) { userHostAddress = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]; } //最后判斷獲取是否成功，並檢查IP地址的格式（檢查其格式非常重要） if (!string.IsNullOrEmpty(userHostAddress) && IsIP(userHostAddress)) { return userHostAddress; } return "127.0.0.1"; } /// <summary> /// 檢查IP地址格式 /// </summary> /// <param name="ip"></param> /// <returns></returns> public static bool IsIP(string ip) { return System.Text.RegularExpressions.Regex.IsMatch(ip, @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)$"); } /// <summary> /// 生成隨機字母與數字 /// </summary> /// <param name="IntStr">生成長度</param> /// <returns></returns> public static string StrRodamNo(int Length) { return StrRodam(Length, false); } /// <summary> /// 生成隨機字母與數字 /// </summary> /// <param name="Length">生成長度</param> /// <param name="Sleep">是否要在生成前將當前線程阻止以避免重復</param> /// <returns></returns> public static string StrRodam(int Length, bool Sleep) { if (Sleep) System.Threading.Thread.Sleep(3); char[] Pattern = new char[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' }; string result = ""; int n = Pattern.Length; System.Random random = new Random(~unchecked((int)DateTime.Now.Ticks)); for (int i = 0; i < Length; i++) { int rnd = random.Next(0, n); result += Pattern[rnd]; } return result; } #region 讀取xml中的指定節點的值 /// <summary> /// 讀取xml中的指定節點的值 /// </summary> private string ReadXmlNode(string filename) { string result = "調用微信服務異常"; XmlDocument xmlDoc = new XmlDocument(); try { xmlDoc.LoadXml(filename); XmlNode root = xmlDoc.SelectSingleNode("xml"); if (root != null) result = (root.SelectSingleNode("code_url")).InnerText; } catch (Exception e) { Common.Utils.WriteLogFile("ReadXmlNode：" + e.Message,""); } return result; } #endregion }
MakeQRCode.aspx.cs 主要生成二維碼 要引用 ThoughtWorks.QRCode.dll
protected void Page_Load(object sender, EventArgs e) { if (!string.IsNullOrEmpty(Request.QueryString["data"])) { string str = Request.QueryString["data"]; //初始化二維碼生成工具 QRCodeEncoder qrCodeEncoder = new QRCodeEncoder(); qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE; qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M; qrCodeEncoder.QRCodeVersion = 0; qrCodeEncoder.QRCodeScale = 4; //將字符串生成二維碼圖片 Bitmap image = qrCodeEncoder.Encode(str, Encoding.Default); //保存為PNG到內存流 MemoryStream ms = new MemoryStream(); image.Save(ms, ImageFormat.Png); //輸出二維碼圖片 Response.BinaryWrite(ms.GetBuffer()); Response.End(); } }
微信掃碼支付異步通知結果處理
WXNativeNotifyPage.aspx.cs
/// <summary> /// 微信掃碼支付異步通知結果處理 主要負責接收微信支付后台發送過來的數據，對數據進行簽名驗證 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void Page_Load(object sender, EventArgs e) { /////////////////////////////////////////////////////////////////////////////////////////////////////////////// //微信的API寫法 /////////////////////////////////////////////////////////////////////////////////////////////////////////////// //接收從微信后台POST過來的數據 //System.IO.Stream s = Page.Request.InputStream; //int count = 0; //byte[] buffer = new byte[1024]; //StringBuilder builder = new StringBuilder(); //while ((count = s.Read(buffer, 0, 1024)) > 0) //{ // builder.Append(Encoding.UTF8.GetString(buffer, 0, count)); //} //s.Flush(); //s.Close(); //s.Dispose(); //SZRPP.Common.Utils.WriteLogFile("接收post來的數據", "Receive data from WeChat : " + builder.ToString()); //Dictionary<string, string> dicParam = GetInfoFromXml(builder.ToString()); /////////////////////////////////////////////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////////////////////////////////////////// //接收從微信后台POST過來的數據 StreamReader reader = new StreamReader(Request.InputStream); String xmlData = reader.ReadToEnd(); Utils.WriteLog("接收post來的微信異步回調：" + xmlData, "微信異步回調"); //序列化xml //轉換數據格式並驗證簽名 Dictionary<string, string> dicParam = GetInfoFromXml(xmlData); string data = ""; try { //當收到通知進行處理時，首先檢查對應業務數據的狀態，判斷該通知是否已經處理過，如果沒有處理過再進行處理，如果處理過直接返回結果成功。在對業務數據進行狀態檢查和處理之前，要采用數據鎖進行並發控制，以避免函數重入造成的數據混亂。 if (dicParam.ContainsKey("return_code") && dicParam["return_code"] == "SUCCESS") { WechatPayHelper wcHelper = new WechatPayHelper(); string strRequestData = ""; //對返回的參數信息進行簽名 string strSign = wcHelper.MakeSignData(dicParam, ref strRequestData); //判斷返回簽名是否正確 if (strSign == dicParam["sign"]) { //判斷業務結果 if ("SUCCESS" == dicParam["result_code"]) { //////檢查openid和product_id是否返回 if (string.IsNullOrEmpty(dicParam["openid"]) || string.IsNullOrEmpty(dicParam["product_id"])) { data = "<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[產品ID不存在回調數據異常]]></return_msg></xml>"; Response.Write(data); } //判斷業務是否處理過 應該有通知日志表 先暫通過繳費表做判斷 string out_trade_no = dicParam["out_trade_no"];//訂單編號 if (out_trade_no != null) { //自己的訂單邏輯處理了 比較金額是否一致 OrderPay pay = payBll.Query(out_trade_no,""); if (pay!= null) { //商戶系統對於支付結果通知的內容一定要做簽名驗證,並校驗返回的訂單金額是否與商戶側的訂單金額一致，防止數據泄漏導致出現“假通知”，造成資金損失。 if (pay.PayPrice.Equals(decimal.Parse(dicParam["total_fee"])/100)) { data = "<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[金額不一致回調數據異常]]></return_msg></xml>"; Response.Write(data); } if (pay.PayStatus == 1) { //已經支付 視為處理過 直接返回 data = "<xml><return_code><![CDATA[SUCCESS]]></return_code> <return_msg><![CDATA[OK]]></return_msg></xml>"; Response.Write(data); } else { //收到確認后，更新訂單的狀態 //修改支付狀態 if (payBll.UpdatePayStatus(out_trade_no, "1",1) > 0) { data = "<xml><return_code><![CDATA[SUCCESS]]></return_code> <return_msg><![CDATA[OK]]></return_msg></xml>"; Response.Write(data); } } } else { data = "<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[系統調用超時]]></return_msg></xml>"; Response.Write(data); } } } else { //錯誤信息 string error = dicParam["err_code"] + ":" + dicParam["err_code_des"]; data = "<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[系統調用超時]]></return_msg></xml>"; Response.Write(data); } } else { data="<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[系統超時]]></return_msg></xml>"; Response.Write(data); } } } catch (Exception ex) { Utils.WriteLog("微信異步回調異常：" + ex.Message, "異常日志"); data = "<xml><return_code><![CDATA[FAIL]]></return_code> <return_msg><![CDATA[系統調用超時]]></return_msg></xml>"; Response.Write(data); } } /// <summary> /// 把XML數據轉換為Sorted<string, string>集合 /// </summary> /// <param name="strxml"></param> /// <returns></returns> public Dictionary<string, string> GetInfoFromXml(string xmlstring) { Dictionary<string, string> sParams = new Dictionary<string, string>(); try { XmlDocument doc = new XmlDocument(); doc.LoadXml(xmlstring); XmlElement root = doc.DocumentElement; int len = root.ChildNodes.Count; for (int i = 0; i < len; i++) { string name = root.ChildNodes[i].Name; if (!sParams.ContainsKey(name)) { sParams.Add(name.Trim(), root.ChildNodes[i].InnerText.Trim()); } } } catch (Exception ex) { } return sParams; }
微信商戶信息配置xml文件
Wechat_Pay_Native.xml
<?xml version="1.0" encoding="utf-8" ?> <data> <!--接收微信支付異步通知回調地址，通知url必須為直接可訪問的url，不能攜帶參數--> <notify_url>http://8.20.7.8:300/PayNotifyPage/PayNotify/WXNativeNotifyPage.aspx</notify_url> <pay_url>https://api.mch.weixin.qq.com/pay/unifiedorder</pay_url> <!--微信開放平台審核通過的應用APPID--> <appid>wxf88888888888</appid> <!--微信支付分配的商戶號--> <mch_id>14666666662</mch_id> <key>16gfhhg5655jjh55ff8ff88gd</key> <subject>財政專費</subject> <trade_type>NATIVE</trade_type> </data>
至此就可以完成掃碼支付了
有圖有真相
生成二維碼顯示
微信掃一掃 結果
